Required Cookies & Technologies. Some of the technologies we use are necessary for critical functions like security and site integrity, account authentication, security and privacy preferences, internal site usage and maintenance data, and to make the site work correctly for browsing and transactions. The glucose molecule has many O–H bonds, which are polar. Polar water molecules are attracted to polar cellulose. Project the animation Water on Wax Paper. Tell students that wax is made from paraffin, which is repeating carbon-hydrogen bonds. The C–H bond is not very polar, so water is more attracted to itself than to the wax.
Count each drop until the water spills over the side of the penny and record your results. Compare your results to those of your classmates. Record the range and calculate the average number of drops that fit on a penny. Add more drops to the penny, without letting the water spill over. Carefully observe and draw the water on the penny. The inflow of sodium ions moves quickly along the nerve cell axon, activating an adjacent nerve cell or muscle. As sodium ions rapidly move across the membrane to the inside of the axon, the polarity of the membrane changes. This reversal in polarity causes the sodium channels to close and the potassium channels to open. Nov 02, 2020 · This article was co-authored by Bess Ruff, MA.Bess Ruff is a Geography PhD student at Florida State University. She received her MA in Environmental Science and Management from the University of California, Santa Barbara in 2016.
Sep 20, 2020 · To describe the P- and S-wave propagation in isotropic solids, only two elastic parameters are needed — Lamé’s constants, λ and μ.Other elastic parameters — Young’s modulus E, Poisson’s ratio σ and bulk modulus κ, and the P- and S-wave velocities can all be expressed in terms of λ and μ (Figure 11.0-1 and Appendix L.1). Submit a business listing to Hours Guide. Get your business listed on Hours Guide to get more customers.